[R] Problems with line types in plots saved as PDF files

[Ista Zahn]

On Tue, Feb 19, 2013 at 10:20 PM, Ian Renner <ian_renner at yahoo.com> wrote:
> Hi Ista,
>
> I'm using Adobe Reader XI. It's good to hear that the plot was produced
> correctly and that it is Adobe that is failing to represent it properly.

Right, well I just installed acroread (adobe reader for linux) and I
do see the problem you originally described. So all is not well,
unless you convince people not to use Adobe reader to view the
document. Sorry I can't be of more help at the moment, as I'm headed
to bed. If no one else beats me to it I'll take another look in the
morning.

Best,
Ista

> Thanks!
>
> Ian
>
> ________________________________
> From: Ista Zahn <istazahn at gmail.com>
> To: Ian Renner <ian_renner at yahoo.com>
> Cc: "r-help at r-project.org" <r-help at r-project.org>
> Sent: Wednesday, 20 February 2013 2:14 PM
> Subject: Re: [R] Problems with line types in plots saved as PDF files
>
> Hi,
>
> On Tue, Feb 19, 2013 at 7:09 PM, Ian Renner <ian_renner at yahoo.com> wrote:
>> Hi,
>>
>> I am trying to save a plot as a PDF with different line types. In the
>> example below, R displays the plot correctly with 2 curves in solid lines, 2
>> curves in dashed lines and 1 curve as a dotted line. However, when I save
>> the image as PDF (as attached), the dashed lines become solid.
>
> I see two solid lines, two dashed lines, and one dotted, using okular
> version 0.16.0. I suspect your pdf viewer is buggy. What are you using
> to view the pdf?
>
> Best,
> Ista
>
> This also happens if I use the pdf command directly (by removing the #
> symbols).
>>
>> Is there any way around this? Saving the image as a JPEG or PNG file works
>> fine but the image quality is not desirable.
>>
>> b.hat = 6
>> a.1 = -12
>> a.2 = 0
>> a.3 = 200
>>
>> b = seq(-10, 10, 0.0002)
>> l = a.1*(b - b.hat)^2 + a.2*(b - b.hat) + a.3
>>
>> lambda = 20
>>
>> p = -lambda*abs(b)
>>
>> pen.like = l + p
>>
>> y.min = 3*min(p)
>> y.max = max(c(l, p, pen.like))
>>
>> #pdf(file = "TestPlot.pdf", 6, 6)
>> #{
>> plot(b, l, type = "l", ylim = c(y.min, y.max), lwd = 2, xlab =
>> expression(beta), ylab = "", col = "green", yaxt = "n", xaxt = "n")
>> points(b, p, type = "l", lty = "dotted", lwd = 2, col = "red")
>> points(b, pen.like, type = "l", lwd = 2, lty = "dashed", col = "green")
>>
>> axis(1, at = c(0))
>> axis(2, at = c(0))
>>
>> lambda.hat = which.max(pen.like)
>> lambda.glm = which(b == b.hat)
>>
>> points(b[lambda.glm], l[lambda.glm], pch = 16, cex = 1.5)
>> points(b[lambda.hat], l[lambda.hat], pch = 17, cex = 1.5)
>>
>> b.hat = -3
>> a.1 = -1.5
>> a.2 = 0
>> a.3 = 120
>>
>> l = a.1*(b - b.hat)^2 + a.2*(b - b.hat) + a.3
>>
>> pen.like = l + p
>>
>> points(b, l, type = "l", lwd = 2, col = "blue")
>> points(b, pen.like, type = "l", lwd = 2, lty = "dashed", col = "blue")
>>
>> lambda.hat = which.max(pen.like)
>> lambda.glm = which(b == b.hat)
>>
>> points(b[lambda.glm], l[lambda.glm], pch = 16, cex = 1.5)
>> points(b[lambda.hat], l[lambda.hat], pch = 17, cex = 1.5)
>>
>> abline(h = 0)
>> abline(v = 0)
>>
>> #}
>>
>> #dev.off()
>>
>>
>> Thanks,
>>
>> Ian
>>
>> ______________________________________________
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>> PLEASE do read the posting guide
>> http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>
>